<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8"/>
    </head>
    <body>
        <table width="500">
            <colgroup><!--前两列为一组-->
                <col/><!--第一列-->
                <col/><!--第二列-->
            </colgroup>
            <col style="background-color: blue;"><!--第三列-->
        <caption>表格标题</caption>
        <thead>
            <tr>
                <th>头1</th>
                <th>头2</th>
                <th>头3</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>111</td>
                <td>111</td>
                <td>111</td>
            </tr>
            <tr>
                <td>222</td>
                <td>222</td>
                <td>222</td>
            </tr>
        </tbody>
        <tfoot>
            <tr>
                <td>尾1</td>
                <td>尾2</td>
                <td>尾3</td>
            </tr>
        </tfoot>
        </table>
    </body>
</html>